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REAR PANEL FEATURESREAR PANEL FEATURES
INPUT SECTIONINPUT SECTION
UNBALANCED INPUTSUNBALANCED INPUTS
This is the main power amp input jack for most applications, and should connect to the "Unbalanced Output" on your preamp of
choice (preferably an SWR Interstellar Overdrive or Grand Prix!). This input utilizes a standard 1/4" phone jack. Input impedance
for the unbalanced input is 33K ohms. Maximum input level is 16 volts RMS.
BALANCED INPUT JACKBALANCED INPUT JACK
Some preamps are equipped with XLR output jacks as a superior option to regular 1/4" patching. An electronically Balanced
(XLR) Input Jack is provided for premium signal integrity. Input impedance for
the balanced input is 10K ohms. Maximum input level is 8 volts RMS.
Pin assignments for the Balanced Input is American Standard as follows:
Pin 1 = ground Pin 2 = + Pin 3 = -
GROUND LIFTGROUND LIFT
A ground lift is provided for the Balanced Inputs. In the normal (out) position of the push switch,
Pin 1 on the XLR connector is grounded. In the Lift (in) position, the ground on Pin 1 is disconnected. When using the
Balanced Inputs, always be aware of the position of the ground lift switch. This function only affects the Balanced Inputs and
does not affect the Unbalanced Inputs.
SLAVE OUTPUTSLAVE OUTPUT
A 1/4" Slave Output (some call it a "patch-through") is provided in the event you want to "daisy chain" more than one power amp
at a time. To use the Slave Output to run an additional power amp, run a shielded patch cord from the Power 750 Slave Output
to the input of the additional power amp. Whatever signal is coming into your Power 750 will be available at the Slave Output,
where the signal can be sent to the additional power amp of your choice (preferably ANOTHER SWR Power 750!). The Volume
controls on the Power 750 do not affect the level of the Slave Output. The Slave Output can also be used as an unbalanced
record out or a monitor send.
SPEAKER OUTPUT SECTIONSPEAKER OUTPUT SECTION
The following section of the manual will deal with the proper connection of speaker cabinets to the power amplifiers in the Power
750. Some of this ground has already been covered in the "Getting Started -Connecting Your Speaker Cabinets" section in the
beginning of the manual. This is meant to
supplement that section and provide information in greater detail, as power amplifiers, impedance
and speaker cabinets are all crucial in determining how best to operate your new Power 750.
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